Second Formal Report for Chemistry 17 in Up Diliman, also Results and discussion Report For Experiment 8Full description
CaOHFull description
Please use responsibly. I do not assure you that all of my answers are correct. In fact, you can assume that almost for every RDR, I wrote something wrong As much as possible, use this only for com...
Formal Report for Chem 17Full description
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SPECTROPHOTOMETRIC DETERMINATION OF THE EQUILIBRIUM CONSTANT OF A REACTION
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This experiment aims (a) to determine the analytical wavelength of the thiocyanate-iron(III) complex ([Fe(SCN)2+]), (b) to determine the equilibrium constant (Keq) for the formation of [Fe(SCN)2+],...Full description
Descripción: Experiment #2
This will also helpful to find out CaCo3 levels from other sources like agricultural lime too.Full description
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PermanganimetryFull description
Spectro of Methyl RedFull description
DraftFull description
Standardization of Sodium HydroxideFull description
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Exp 6 Determination of the Molar Volume of a Gas and the Universal Gas Constant Chem 14 Laboratory By Merrene Bright D. Judan Jeremy Senver A. Hombre BS Industrial Pharmacy, UP Manila
Solubility of Formaldehyde in different solvents
Notes on the proper way to derive the equilibrium constant. Relevant for high school and university chemistry education.
EXPERIMENT 3THERMODYNAMIC FUNCTIONS AND SOLUBILITY PRODUCT OF BARIUM NITRATE.docx
An s we r st oQue s t i o ns
1 . Wr i t et h ene ti o ni cr e a c t i o nf o rt h epr e c i p i t a t i o no fCa ( OH) a ndg i v et h eKsp e xpr e s s i o no ft he 2 r e a c t i o n. 2+ Neti oni c : Ca( OH) +2OH2⇌ Ca 2 Ksp e xpr e s s i on:Ksp =[ Ca2+] [ OH-] 2 + 2 . Wh a ti st h ewo r k i nge q u a t i o nf o rt h ed e t e r mi na t i o no ft h e[ Ca ]i nt h es a t ur a t e ds o l ut i o no f Ca( OH) 2?
2+
[ Ca ]=
−¿ ¿ OH ¿ ¿ ¿
M 1 V 1
=
V 2
x
1 2
Whe r eM1,V1, a ndV2 r e f e rt ot heone so f[ OH-] . 2 + 3. Wr i t et heKsp o fCa ( OH) i nt e r mso fi t s( a )mo l a rs o l ub i l i t ys , ( b )[ OH-]a nd( c )[ Ca ] . 2 3 ( a )Ksp=4 s
( b)Ksp=
−¿ ¿ OH ¿ ¿3 ¿ ¿ ¿
3 ( c )Ksp =4[ Ca2+]
4 . Di s c u s st h ee ff e c t so fc o mmo ni o nsa ndi nc r e a s i ngi o ni cs t r e ng t ho nt h es o l ub i l i t yo ft h eCa ( OH) 2 pr e c i p i t a t e .Dot he yc o i nc i d ewi t ht he o r e t i c a le ffe c t s ?Exp l a i n. Comm mmoni onshavebeens hown wnt oi ncr eas esol ubi l i t yasme ment i onedi nt heI nt r oduct i onof t heForma malRepor ts ubmi mi t t ed.TheComm mmonI onEffec ti sanappl i cat i onofLeChat el i er ’ s pr i nc i pl e .I ts t a t e st ha twhe nac ommoni oni sa dde di nt oas ol ut i onofdi s s oc i a t e ds o l i ds , t her e a c t i o n wo ul dpr o c e e dt o wa wa r dst hepr e c i pi t a t i o no ft hedi s s o l v e ds o l i dduet ot he s o l ut i on’ ss hi f t i nge qui l i br i um whi c hba l a nc e st her e a c t i ont oma i nt a i nt hes t a t e .I , ns h o r t t hea ddi t i o no fac o mm mmoni oni nc r e a s e s /i mpr o ve ss o l ubi l i t y . I nc r e a s i ng t he i o ni cs t r e ngt ha l s oi nc r e a s e ss o l ub i l i t y .Wi Wi t ht he i nc r e a s ei nt he c o nc e n t r a t i on o ft her e a c t a nt s ’i o ns ,t hes o l ubi l i t ya l s oi nc r e a s e sbe c a us emo r eo ft he r e ac t a nt s ’ mol e swi wi l li nt e r a c tt he r e b yc a us i ngar e a c t i on.
5 . Wh ata r et h epo s s i b l es o ur c e so fe r r o r sa ndt h e i re ff e c to nt hec a l c ul a t e dpa r a me t e r s ?Ra t i o na l i z e . Mos toft hee r r or sc a nbet r a c e dba c kt ohuma ne r r or .F ori ns t a nc e ,t he r e ’ st hepos s i bi l i t y t hatt her ewa wasami mi s r eadi ngwheni tc ome mest ot hemeas ur eme mentoft hesol ut i onsand/or t hepr i ma r ys t a nda r d.A mi s r e a di ngwi l la ffe c tt hec a l c ul a t i onso ft hemo mo l a r i t ya ndc o ul d pot e nt i al l yl e adt oi nc or r e c tr e s ul t s .
P a g e1o f2
Ani ncor r ec tmeas ur ementi nt hewei ghi ngoft hepr i mar ys t andar dhasaneve nbi gger e ffe c ts i nc ei ta ffe c t st her e s to ft he e x pe r i me nt .Li k ei nt hepr e v i o us ,i ta ffe c t st he c a l c ul a t i o nsa ndc o ul dma ket her e s ul tunde s i r a bl e . Re f e r e nc e s
[ 1 ]Br o wn,e .a .( 2 015 ) . ( Thi r t e e nt he d. ) .London:Pe a r s on Ch e mi s t r y : Th eCe n t r a lSc i e n c e Educat i onLi mi t ed. [ 2 ]Odi a n,G. ,&Bl e i ,I .( 199 4) .Sc h a um' sOut l i ne s :Ge n e r a l , Or g a ni c , a ndBi o l o g i c a l Ch e mi s t r y . New J er s ey: TheMc Gr awHi l lCompani es ,I nc . [ 3 ]S i l be r be r g, M.( 2013 ) .Pr ( Thi r ded. ) .New Yor k:McGr awHi l l . i nc i p l e so fGe ne r a lChe mi s t r y